Question

A school has 2 computer labs. Each lab has 30 computers. A total of 6 computers in the school are not working. Which expression can you use to find the number of working computers in the school?

Answer 1

Just do (2*30)-6

Step-by-step explanation56, the number of working computers

Answer 2

The number of working computers in the school is
`54`

Explanation:

we know that

To find the number of working computers in the school, subtract the number of computers that are not working from the total computers of the school

so

Let

x-----> total computers

y-----> the number of computers that are no working

T-----> the number of working computers in the school

`T=x-y` -----> equation A

Find the total computers of the school x

`x=2*30=60` ----> equation B

`y=6` -------> equation C

Substitute equation B and equation C in equation A

`T=60-6=54`